... EN10255, EN10240, EN10220, EN10219, EN393. Section type: round, square, rectangular, oval and other special section type4. Detailed Product DescriptionERW ... steel pipeGRADE:Q195,Q215,Q235,Q275,Q345 OD:21.3mm-219mm WT:0.8mm ... -8.5mm Length:12m PRODUCTBlack STEEL PIPE/painted/powder coatedTECHNIQUEWELDED/ERWMATERIALQ195,Q215,Q235,Q275, Q345 SIZEOUTER DIAMETER:21.3mm ...